Fold predicable instructions into MOVCC / t2MOVCC.

[oota-llvm.git] / test / CodeGen / Thumb2 / thumb2-bcc.ll

diff --git a/test/CodeGen/Thumb2/thumb2-bcc.ll b/test/CodeGen/Thumb2/thumb2-bcc.ll
index aae9f5c0af714e0f13e59a330032dcb25e479e89..4a2d6000bbc7bfd0962f23daa47e96e09321786b 100644 (file)
--- a/test/CodeGen/Thumb2/thumb2-bcc.ll
+++ b/test/CodeGen/Thumb2/thumb2-bcc.ll
@@ -1,19 +1,23 @@
 ; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
-; RUN: llc < %s -march=thumb -mattr=+thumb2 | not grep it
+; If-conversion defeats the purpose of this test, which is to check CBZ
+; generation, so use memory barrier instruction to make sure it doesn't
+; happen and we get actual branches.
 
 define i32 @t1(i32 %a, i32 %b, i32 %c) {
 ; CHECK: t1:
 ; CHECK: cbz
-       %tmp2 = icmp eq i32 %a, 0
-       br i1 %tmp2, label %cond_false, label %cond_true
+  %tmp2 = icmp eq i32 %a, 0
+  br i1 %tmp2, label %cond_false, label %cond_true
 
 cond_true:
-       %tmp5 = add i32 %b, 1
-        %tmp6 = and i32 %tmp5, %c
-       ret i32 %tmp6
+  fence seq_cst
+  %tmp5 = add i32 %b, 1
+  %tmp6 = and i32 %tmp5, %c
+  ret i32 %tmp6
 
 cond_false:
-       %tmp7 = add i32 %b, -1
-        %tmp8 = xor i32 %tmp7, %c
-       ret i32 %tmp8
+  fence seq_cst
+  %tmp7 = add i32 %b, -1
+  %tmp8 = xor i32 %tmp7, %c
+  ret i32 %tmp8
 }